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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mediaobject.h"
#include "abstractaudioeffect.h"
#include "audioplayer.h"
QT_BEGIN_NAMESPACE
using namespace Phonon;
using namespace Phonon::MMF;
/*! \class MMF::AbstractAudioEffect
\internal
*/
/*! \namespace Phonon::MMF
\internal
*/
AbstractAudioEffect::AbstractAudioEffect(QObject *parent,
const QList<EffectParameter> ¶ms)
: MediaNode(parent)
, m_params(params)
, m_player(0)
{
}
QList<Phonon::EffectParameter> AbstractAudioEffect::parameters() const
{
// Convert from QList<MMF::EffectParameter> to QList<Phonon::EffectParameter>
QList<Phonon::EffectParameter> result;
EffectParameter param;
foreach (param, m_params)
result += param;
return result;
}
QVariant AbstractAudioEffect::parameterValue(const Phonon::EffectParameter &queriedParam) const
{
const QVariant &val = m_values.value(queriedParam.id());
if (val.isNull())
return queriedParam.defaultValue();
else
return val;
}
void AbstractAudioEffect::setParameterValue(const Phonon::EffectParameter ¶m,
const QVariant &newValue)
{
m_values.insert(param.id(), newValue);
if (m_effect.data()) {
const EffectParameter& internalParam = internalParameter(param.id());
int err = parameterChanged(internalParam, newValue);
// TODO: handle audio effect errors
Q_UNUSED(err);
}
}
void AbstractAudioEffect::abstractPlayerChanged(AbstractPlayer *player)
{
m_player = qobject_cast<AbstractMediaPlayer *>(player);
m_effect.reset();
}
void AbstractAudioEffect::stateChanged(Phonon::State newState,
Phonon::State oldState)
{
if (Phonon::LoadingState == oldState
&& Phonon::LoadingState != newState)
createEffect();
}
void AbstractAudioEffect::connectMediaObject(MediaObject *mediaObject)
{
Q_ASSERT_X(!m_player, Q_FUNC_INFO, "Player already connected");
Q_ASSERT_X(!m_effect.data(), Q_FUNC_INFO, "Effect already created");
abstractPlayerChanged(mediaObject->abstractPlayer());
connect(mediaObject, SIGNAL(stateChanged(Phonon::State, Phonon::State)),
SLOT(stateChanged(Phonon::State, Phonon::State)));
connect(mediaObject, SIGNAL(abstractPlayerChanged(AbstractPlayer *)),
SLOT(abstractPlayerChanged(AbstractPlayer *)));
if (mediaObject->state() != Phonon::LoadingState)
createEffect();
}
void AbstractAudioEffect::disconnectMediaObject(MediaObject *mediaObject)
{
mediaObject->disconnect(this);
abstractPlayerChanged(0);
}
void AbstractAudioEffect::setEnabled(bool enabled)
{
TInt err = KErrNone;
if (enabled)
// TODO: handle audio effect errors
TRAP(err, m_effect->EnableL())
else
// TODO: handle audio effect errors
TRAP(err, m_effect->DisableL())
Q_UNUSED(err);
}
void AbstractAudioEffect::createEffect()
{
Q_ASSERT_X(m_player, Q_FUNC_INFO, "Invalid media player pointer");
if (AudioPlayer *audioPlayer = qobject_cast<AudioPlayer *>(m_player)) {
createEffect(audioPlayer->nativePlayer());
}
if (m_effect.data()) {
EffectParameter param;
int err = 0;
foreach (param, m_params) {
const QVariant value = parameterValue(param);
err = parameterChanged(param, value);
}
Q_UNUSED(err)
}
}
const MMF::EffectParameter& AbstractAudioEffect::internalParameter(int id) const
{
const EffectParameter *result = 0;
for (int i=0; i<m_params.count() && !result; ++i) {
if (m_params[i].id() == id)
result = &m_params[i];
}
Q_ASSERT_X(result, Q_FUNC_INFO, "Parameter not found");
return *result;
}
int AbstractAudioEffect::parameterChanged(const EffectParameter ¶m,
const QVariant &value)
{
int err = 0;
switch (param.id()) {
case ParameterEnable:
setEnabled(value.toBool());
break;
default:
{
const EffectParameter& internalParam = internalParameter(param.id());
err = effectParameterChanged(internalParam, value);
}
break;
}
if (!err)
TRAP(err, m_effect->ApplyL());
return err;
}
int AbstractAudioEffect::effectParameterChanged(
const EffectParameter ¶m, const QVariant &value)
{
// Default implementation
Q_ASSERT_X(false, Q_FUNC_INFO, "Effect has no parameters");
return 0;
}
QT_END_NAMESPACE
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